I've been adding a grape flavored powered filled w/ electrolytes to my water. for the past 2 days my stools have been green and loose, is that normal?

Possibly: Loose & green stools can be a sign of a infection such as viral gastroenteritis, but certainly can be from your powder. If you discontinue the powder & your stools normalize, then you may have your answer. The food coloring dyes often show up in stool. Consider increasing fiber to add bulk to your stool. If I can help, then join my care team & virtual practice at www.healthtap.com/dr-clarkeholmes